From 0a785eb4f488447fa94eb77fa2edbeaabba70170 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mariusz=20Pluci=C5=84ski?= <mplucinski@mplucinski.com>
Date: Thu, 18 Feb 2016 23:54:08 +0100
Subject: [PATCH] Features: Clang has no cxx_decltype_incomplete_return_type in
 MSVC sim mode

---
 Modules/Compiler/Clang-CXX-TestableFeatures.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Modules/Compiler/Clang-CXX-TestableFeatures.cmake b/Modules/Compiler/Clang-CXX-TestableFeatures.cmake
index b39475ce4..69965a6ce 100644
--- a/Modules/Compiler/Clang-CXX-TestableFeatures.cmake
+++ b/Modules/Compiler/Clang-CXX-TestableFeatures.cmake
@@ -8,7 +8,6 @@ set(testable_features
   cxx_constexpr
   cxx_contextual_conversions
   cxx_decltype
-  cxx_decltype_incomplete_return_types
   cxx_default_function_template_args
   cxx_defaulted_functions
   cxx_delegating_constructors
@@ -36,6 +35,9 @@ set(testable_features
   cxx_variable_templates
   cxx_variadic_templates
 )
+if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
+  list(APPEND testable_features cxx_decltype_incomplete_return_types)
+endif()
 
 foreach(feature ${testable_features})
   set(_cmake_feature_test_${feature} "${_cmake_oldestSupported} && __has_feature(${feature})")